Home / 209,510,153.28-289,112,578.56-115,405,873.92

Finding the Fourth Proportional to 209,510,153.28, 289,112,578.56 and 115,405,873.92

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Solution

The fourth proportional to 209,510,153.28, 289,112,578.56 and 115,405,873.92 is: 159,253,808.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,510,153.28 : 289,112,578.56 = 115,405,873.92 : x
  2. Step 2: Convert to fraction form
    209,510,153.28/289,112,578.56 = 115,405,873.92/x
  3. Step 3: Cross multiply
    209,510,153.28x = 289,112,578.56 × 115,405,873.92
  4. Step 4: Simplify right side
    209,510,153.28x = 33,365,289,789,981,456
  5. Step 5: Solve for x
    x = 33,365,289,789,981,456/209,510,153.28
  6. Step 6: Final answer
    x = 159,253,808.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.